Students should understand each objective. As you cover material in the chapter. you may want to refer back to the slides.

The Internet has been around --30 years. You should speak with your students about exciting places they will visit, the foundations of the WWW, and how the WWW works on a server/client model. A URL is required, and for a document to contain hypertext and/or hypermedia it must have the HyperText Transfer Protocol. A browser is required to read HTML documents. HTML is the language of the Web.

HTTP: Hypertext Transfer Protocol - used to transmit Web documents. HTTPS: Hypertext Transfer Protocol Secured - used to transmit secured Web documents. HTML: Hypertext Markup Language – used to create documents that can be read by Web browsers. ISP: Internet Service Provider - needed to connect to the Internet. URL: Uniform Resource Locator: WWW address for finding information on the Web. URL format: .edu, .gov, .com, .org Discuss the differences between HTTP and HTTPS, and explain that cookies are written to the users disk each time a user visits a site.

The Grauer Web site provides additional resources such as online study guides.

Most students should find searching the net a pleasant exercise. Use these objectives to reinforce this search process. Explain that all search engines, while similar in query building, have different databases and specialties. Searching is more of an art; however, the more you do the better you will become. You should emphasize that most students will not become Web designers, but learning how to search the Web effectively will benefit them. Students should understand what a URL means and how to use the Save As and Find Commands. A search engine is an amazing tool. It uses the student’s choice of keywords and Boolean operators to establish a search. It is important to understand that since all search engines have different databases and use different logical operators, the answers will differ—so use multiple search engines. The documents returned are referred to as hits. A Query is a word(s) or phrase, looking for documents on a specific topic. A Search Form is where you enter key words or phrases. A Site Search searches a specific site. Hits are returned from a search. Students can use an AutoSearch by entering a key word in the Address box then typing “go”. The Net Search button gives you easy access to multiple search engines—five prominent ones, but also some others if you scroll down in Net Search.

Use this opportunity to explain the differences between keyword searches and category searches. Categories are helpful if your topic is ambiguous. The status bar will keep you informed of your progress. Again, let students understand that searching is more of an art than a science, but understanding the use of Boolean operators used in library science is crucial to getting good and quick results. The Boolean operators are And, Not, and Or, and each search engine sets up their own Boolean structure. Emphasize to always use multiple search engines and to read about the search process provided by each search engine. Explain how the Find command is to help move around in lengthy Web pages. Understanding what a URL is and how it is structured will help students when they get stuck. For example, knowing that a server is often the name of the company or organization allows you to go directly to the URL without searching. Understanding that a URL can be peeled back until you reach the home page is also useful. Learning about searching for a concept is important because it may relate information you were not thinking about. Often students want to be able to save the information they find because they cannot use Favorites in a lab situation. Discuss using the right mouse button for Saving both graphics and files. The selection of Favorites is useful to students in home situations; suggest that as an alternative to saving.

Copyright provides legal protection to a written or artistic work, giving the author exclusive rights to its use and reproduction. Public domain means that everyone can freely reproduce and distribute the work. The Fair Use exclusion is used for educational, non-profit purposes, or for the purpose of critical review or commentary that does not violate copyright laws. A footnote can be inserted into a document and may include information about the original source of a quoted or copied work. A footnote appears at the bottom of the page where the reference occurs. An endnote could also contain information about the original source of a quoted or copied work. An endnote appears at the end of a document.

Perhaps one of the most important concepts for students is the copyright infringement issue.

Web pages can easily be created in Word. You may want to show students how quickly a Web page can be created in Word, by typing some text and using the Save As Web Page command.

Transcript of "Exp2003 Int Ppt 01"

1.
Exploring Microsoft Office Committed to Shaping the Next Generation of IT Experts. Internet Explorer and the World Wide Web: Welcome to Cyberspace

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<ul><li>Define the Internet and give a brief overview of its history </li></ul><ul><li>Explain how the World Wide Web differs from the Internet </li></ul><ul><li>Describe the structure of a Web address; explain what is meant by “backing up within an address” </li></ul><ul><li>Describe the various buttons on the Internet Explorer toolbar </li></ul><ul><li>Explain how to return to a Web site; distinguish between the History and Favorites lists </li></ul>Objectives (1 of 2)

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Objectives (2 of 2) <ul><li>Name three different search engines; explain the advantage of using multiple engines with the same query </li></ul><ul><li>Distinguish between AND, OR, and NOT </li></ul><ul><li>Download a picture from the Web </li></ul><ul><li>Discuss several similarities and differences between e-commerce and traditional commerce </li></ul><ul><li>Distinguish between the http and https protocols; define a cookie </li></ul><ul><li>Create a Web page </li></ul>

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The Internet <ul><li>The Internet is a worldwide collection of networks connecting millions of computers all over the world. </li></ul><ul><li>A server runs software that coordinates information among the other computers or clients </li></ul><ul><li>The software on a server is called the network operating system. </li></ul>

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The Internet <ul><li>The Internet is a worldwide collection of networks connecting millions of computers all over the world. </li></ul>

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The Internet <ul><li>A Client – a computer that asks for data </li></ul><ul><li>A server runs software that coordinates information among the other computers or clients. It receives a request and sends data to the Client. </li></ul><ul><li>The software on a server is called the network operating system. </li></ul>

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Accessing the Internet <ul><li>DSL </li></ul><ul><ul><li>Uses standard phone lines or twisted pair wiring card </li></ul></ul><ul><ul><li>One line is used for voice – slower speed </li></ul></ul><ul><ul><li>Other two lines are used to send and receive data – from 128 Kbps to 1.5 megabits </li></ul></ul><ul><ul><li>Some advantages…Disadvantages of DSL? </li></ul></ul>

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Accessing the Internet <ul><li>Advantages of DSL </li></ul><ul><ul><li>Faster? </li></ul></ul><ul><ul><ul><li>During peak times of Internet usage, lines are not shared </li></ul></ul></ul><ul><ul><li>Can use your phone </li></ul></ul><ul><ul><li>Hard to track for hackers </li></ul></ul><ul><li>Disadvantages of DSL </li></ul><ul><ul><li>Costly in terms of hardware </li></ul></ul><ul><ul><li>Costly in terms of installation </li></ul></ul><ul><ul><li>Quality and speed affected by distance from the Central Switching Office 18,000 feet </li></ul></ul>

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Accessing the Internet <ul><li>Cable </li></ul><ul><ul><li>Uses fiber-optic lines on coaxial cable </li></ul></ul><ul><ul><li>Transmits data at the speed of light </li></ul></ul><ul><ul><li>On a network, our workstation has a NIC or Network Interface card to connect to the Network </li></ul></ul><ul><ul><li>Cable also uses a cable modem </li></ul></ul><ul><ul><li>Some advantages…Disadvantages of Cable? </li></ul></ul>

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Origins of the Internet <ul><li>U.S. Defense Department - Concerned about security due to connectivity developed an experimental Wan, called ARPANET. </li></ul><ul><ul><li>Circuit Switching – still used by most telephones companies, single line of communication </li></ul></ul><ul><ul><li>Packet Switching – messages are sent or routed in packets by computers called routers. </li></ul></ul>

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Accessing the Internet <ul><li>Internet service providers (ISPs) are the gateway to the Internet. </li></ul><ul><ul><li>Growth is phenomenal </li></ul></ul><ul><ul><li>Supply and demand has increased the number of ISP’s available </li></ul></ul>

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The Internet <ul><li>A network of networks </li></ul><ul><li>Began in 1969 as ARPAnet (Advanced Research Project Agency Network) </li></ul><ul><li>No central authority and thus impossible to state the precise size </li></ul><ul><li>The Internet is not free just because you do not pay for it – Who pays for it? </li></ul>

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World Wide Web <ul><li>The World Wide Web is the collection of Web pages accessed through the Internet. The Web is not the Internet! </li></ul><ul><li>Computers that host Web pages are called Web servers . Servers are also used to connect Workstations/computers via a network with shared hardware and software. </li></ul>

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Origin of Hypertext or Web Page <ul><li>HTML - Hypertext Markup Language </li></ul><ul><ul><li>Programming language </li></ul></ul><ul><ul><li>A set of code or tags which determine what to do with pictures and text </li></ul></ul><ul><ul><li>A Graphic User Interface? </li></ul></ul><ul><ul><li>Invented by Berners-Lee and Calliau </li></ul></ul>

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Anchor Tags <ul><li>Real power of HTML </li></ul><ul><li>Anchor tags allow us to link to other HTML documents </li></ul><ul><li>Commonly called hyperlinks or Links </li></ul>

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Hyperlinks <ul><li>The essence of the Web as you click on a link to move to the next document, it may be stored on a different computer </li></ul><ul><li>Hyperlinks may contain text, graphics, sound, or video links </li></ul><ul><ul><li>Blue underlined fonts are unexplored </li></ul></ul><ul><ul><li>Magenta links have been previously accessed </li></ul></ul>www.microsoft.com www.microsoft.com

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The World Wide Web <ul><li>A subset of the Internet consisting of all computers with hypertext or hypermedia documents </li></ul><ul><li>These documents contain references (links) to other documents which may be on a different computer anywhere in the world </li></ul><ul><li>Began in 1992 at the European Particle Physics Laboratory (CERN) in Switzerland </li></ul>

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Web Sites <ul><li>A collection of linked Web pages </li></ul><ul><li>Start usually with the Home Page </li></ul><ul><li>All other HTML or Web pages are organized around the home page </li></ul>

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Connecting to a Web Site <ul><li>Browsers usually use DOMAIN Name Addressing to locate a Web site </li></ul><ul><li>Each site has a Unique Internet Protocol address or IP address </li></ul><ul><ul><li>What is the difference between these two addresses? </li></ul></ul><ul><ul><li>http://www.cme.com and </li></ul></ul><ul><ul><li>http:// 220.87.3204.02 </li></ul></ul><ul><ul><li>One is a domain name and the other is the IP address for the same site. </li></ul></ul>

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Domain Name <ul><li>http://www.cme.com </li></ul><ul><li>www.cme.com defines the domain name </li></ul>

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Top Domain Name <ul><li>http://www.cme.com </li></ul><ul><li>The last part of the domain name is the top level domain .com here </li></ul>

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Search Engines <ul><li>A program that systematically searches the Web for documents on a specific topic </li></ul><ul><li>Uses a key word or words as a query, A Query is a word or phrase, was returns information from a database. </li></ul><ul><li>Several search engines are available </li></ul><ul><li>Each search engine has its own database </li></ul><ul><li>No search engine is best </li></ul><ul><li>Uses Boolean (logical) operators </li></ul><ul><li>Returns “hits” or documents once search has been submitted </li></ul>

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Suggestions for Searching <ul><li>Use the Search button on the Internet Explorer Toolbar </li></ul><ul><li>Try multiple search engines on one query </li></ul><ul><li>Be aware of logical operators - AND, OR, and NOT </li></ul><ul><li>Be specific on your Search: e.g., “Eleanor Roosevelt ” rather than “first ladies” </li></ul><ul><li>Set as few Bookmarks/Favorites as you can! </li></ul>

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Web Site and Saving an Image Choose Save Picture As command Right click picture for context-sensitive menu

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E-commerce <ul><li>The exchange of goods and services </li></ul><ul><ul><li>Buyer and seller </li></ul></ul><ul><ul><li>Products and suppliers </li></ul></ul><ul><ul><li>A place to “meet” </li></ul></ul><ul><ul><li>Marketing to attract the buyer </li></ul></ul><ul><ul><li>Accept and process the order </li></ul></ul><ul><li>All of these elements are present in e-commerce and traditional commerce </li></ul>

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Security and Privacy <ul><li>Secure transactions </li></ul><ul><ul><li>https protocol </li></ul></ul><ul><ul><li>Encryption </li></ul></ul><ul><li>Privacy </li></ul><ul><ul><li>Cookie is a small file written to your disk each time you visit a site </li></ul></ul><ul><ul><li>Problem is when one site can read many cookies, e.g., DoubleClick.com </li></ul></ul>